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Question

In a hydrogen atom, the binding energy of the electron in the nth state is En,then the frequency of revolution of the electron in the nth orbit is:

A
2En/nh
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B
2Enn/h
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C
En/nh
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D
Enn/h
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Solution

The correct option is A 2En/nh
We know that, Kinetic energy=Binding energy
12mv2=En(i)mvr=nh2π(ii)
Dividing (i) by (ii),
v2πr=2Ennh
Therefore, the frequency of revolution of the electron in the nth orbit is=2Ennh

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